CWK New Replacement Laptop Notebook Battery for Samsung R428 R458 NP-R468 AA-PB9NS6B AA-PB9NC6B NP305E5AI NP305E5Z NP305E7A NP305E7AH NP305E7AI NP305E7Z NP-R780E NP-R440E NP-R730CE NP-RV510 R610 NP300V4A NP300V4AH NP300V4AI NP300V4Z NP300V4ZH NP300V4ZI Samsung NP-RF511 NT-RF511 RF711 NP-RF711 NT-RF711 NP-RV410 NP-R52NP-R528E NP-R530 NP-R530-JA01AO NP350V5C NP350V5C-T02US NP355E5C-A01US NP550P7C NP350V5C NP355V4C AA-PB9MC6S AA-PB9MC6W AA-PB9MC6B Condition: Brand New - Grade A cells Battery Type: Li-ion Voltage: 11.1 Volt (10.8 Volt compatible) Capacity: 5200mAh (Better than 4400mAh) 90 Day Money Back. Buy with confidence!